I don't understand what you mean with 'SaaS setup'. Our SaaS service is free, see
https://about.gitlab.com/gitlab-com/. You can use GitLab CE for free on your own server
https://about.gitlab.com/downloads/ or get GitLab EE with a subscription
https://about.gitlab.com/pricing/ The most affordable subscription can be bought in 10-user packs, $390 for 10 yearly users.